Negative Real part Of input impedance
Negative Real part Of input impedance
(OP)
Hi
I simulate an inverted patch microstrip antennac using FDTD. the feed structure that I used, was a Gussian Pulse input J-current. Everything is ok. and I almost get good result but the problem is that the real part of input impedance is negative. Can anybody have any comment about that?
tanx
I simulate an inverted patch microstrip antennac using FDTD. the feed structure that I used, was a Gussian Pulse input J-current. Everything is ok. and I almost get good result but the problem is that the real part of input impedance is negative. Can anybody have any comment about that?
tanx





RE: Negative Real part Of input impedance
so you need to incorporate some kind of energy absorbing mechanism(like dielectric loading) in your design.
i had the similar problem when i was simulating my antenna using FDTD based Zeland Software.When i increased the number of perfectly matched layers(PML),i could able to get the real part of the impedance in positive.
all the best.
RE: Negative Real part Of input impedance